Low Voltage level problem in STM32 system chip

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Discussion Overview

The discussion revolves around a low voltage issue encountered in a circuit design using the STM32 103RTC6 microcontroller, specifically after connecting a relay. Participants are exploring the reasons behind the unexpected voltage reading of around 2V instead of the anticipated 0 volts. The context includes circuit design and troubleshooting within a simulation environment.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant reports a low voltage of around 2V when connecting a relay to the STM32 103RTC6, which was expected to be 0 volts.
  • Another participant mentions the intention to share a schematic for further analysis, acknowledging that some parts may be in Chinese.
  • A participant expresses gratitude for assistance and indicates they are working on suggestions provided by another mentor.
  • A later post reiterates the voltage disturbance issue and requests feedback on the attached schematic files for potential faults.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the cause of the low voltage issue, and multiple views and suggestions are present without resolution.

Contextual Notes

The discussion includes references to schematic files that may contain language barriers, and there is an indication of ongoing troubleshooting efforts without clear resolution of the underlying problem.

nomi114
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Thread moved to the schoolwork forums
Dear all, hope you are doing great. I am designing a circuit using EasyEDA simulation tool. But I am facing a problem after connecting the relay to the single-Chip IC (STM32 103RTC6). The low voltage is showing around 2V, whereas it was originally supposed to be 0 volts. I am still unable to understand why it is, so I need your help, please.
 
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I see from your thread about this in the allaboutcircuits forum that you will be able to share the schematic tomorrow. Don't worry if parts of it are in Chinese -- a schematic uses symbols and numbers for most of the information.

I also see from that other thread that you are a student there, so I've moved your thread to the schoolwork forums for you.
 
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Thank you So much sir for your kindness and help. As the other mentor gave me some suggestions, I am working on it. If I didn't resolve my problem, then I will upload my query again here. Thank you, again dear Sir.
 
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Dear all, hope you are doing great. I have been working diligently on the hardware issue, but unfortunately, I have been unable to resolve it. After connecting the relay to the single-Chip IC (STM32 103RTC6), I noticed that there is a disturbance in the voltages. I have attached my schematic files for your review. Could you please take a look at them and let me know if you see any potential faults or issues? I would greatly appreciate your expertise and guidance on this matter. Thank you once again for your time and consideration.
 

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